冷等离子体处理对棉秆无胶纤维板性能影响

以棉秆为原料,通过冷等离子体预处理纤维,采用干法纤维板生产工艺制备棉秆无胶纤维板。研究了处理时间对棉秆纤维表面自由基数量以及无胶纤维板性能的影响。研究结果表明:棉秆纤维经冷等离子体处理后表面相对自由基数量显著提高,用其制成的无胶纤维板强度有明显提高,但吸水率却有一定程度增加。随着处理时间的延长,纤维表面自由基数量增加不明显,板材强度变化亦不明显,因此,处理时间不宜过长。

Effect of Non-thermal Plasm Treatment on Properties of Binderless Fiberboard from Cotton Straw

Binderless fiberboard from cotton straw treated by non-thermal plasm was presented in this paper.The effects of treatment time on the free radical of fibers and properties of binderless fiberboard were investigated.The results showed that the free radical of fibers was increased dramatically after non-thermal plasm treatment.The binderless fiberboard from cot- ton straw treated by non-thermal plasm presented high strength but poor water resistance,In addition,with increasing treat- ment time,the free radical of fibers didn't change significantly,while MOR of the boards was decreased slightly.There- fore,the cotton straw fibers were not suitable for long time treatment by non-thermal plasm.